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DC Field | Value | Language |
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dc.contributor.author | Singh, Amar Pal | - |
dc.contributor.author | Fridman, Yulia | - |
dc.contributor.author | Holland, Neta | - |
dc.contributor.author | Ackerman-Lavert, Michal | - |
dc.contributor.author | Zananiri, Rani | - |
dc.contributor.author | Jaillais, Yvon | - |
dc.contributor.author | Henn, Arnon | - |
dc.contributor.author | Savaldi-Goldstein, Sigal | - |
dc.date.accessioned | 2018-07-10T10:28:55Z | - |
dc.date.available | 2018-07-10T10:28:55Z | - |
dc.date.issued | 2018 | - |
dc.identifier.citation | Developmental Cell, 46(1): 59-72.e1-e4 | en_US |
dc.identifier.issn | 1534-5807 | - |
dc.identifier.uri | http://223.31.159.10:8080/jspui/handle/123456789/873 | - |
dc.description | Accepted date: 4 June 2018 | en_US |
dc.description.abstract | Plants acquire essential elements from inherently heterogeneous soils, in which phosphate and iron availabilities vary. Consequently, plants have developed adaptive strategies to cope with low iron or phosphate levels, including alternation between root growth enhancement and attenuation. How this adaptive response is achieved remains unclear. Here, we found that low iron accelerates root growth in Arabidopsis thaliana by activating brassinosteroid signaling, whereas low-phosphate-induced high iron accumulation inhibits it. Altered hormone signaling intensity also modulated iron accumulation in the root elongation and differentiation zones, constituting a feedback response between brassinosteroid and iron. Surprisingly, the early effect of low iron levels on root growth depended on the brassinosteroid receptor but was apparently hormone ligandindependent. The brassinosteroid receptor inhibitor BKI1, the transcription factors BES1/BZR1, and the ferroxidase LPR1 operate at the base of this feedback loop. Hence, shared brassinosteroid and iron regulatory components link nutrient status to root morphology, thereby driving the adaptive response. | en_US |
dc.description.sponsorship | We thank M. Shenker (HUJI) and A. Eshel (TAU) for the fruitful discussions. We also thank Y. Yin (ISU) for providing anti-BES1 antibodies; T. Asami (UTokyo) for providing BRZ; J. Li (UM-Peking University and UMS), M. Szekeres (BRC), B. Poppenberger (TUM), Z. Wang (Stanford), and X. Wang (Huazhong Agricultural University) for sharing published material; the NASC collection for providing transgenic Arabidopsis lines; and R. Fluhr, B. Horwitz, and members of the lab for their critical review of the paper. We are grateful to Ayelet Kurtz and Dan Eisler for their technical assistance, to Smadar Goldstein for the graphical abstract, to the Life Sciences and Engineering Infrastructure Center and Russell Barrie Nanotechnology Institute at the Technion. A.P.S. was supported by the PBC Fellowship Program for Outstanding Post-doctoral Fellows from China and India 2012/2013. This research was supported by grants from ERC no. 3363360-APPL under FP/2007–2013 to Y.J., Israel Science Foundation (296/13) to A.H., and the United States-Israel Binational Agricultural Research and Development Fund (IS-BARD IS-4827-15), Israel Science Foundation (2649/16), and Fund for Applied Research at the Technion to S.S.-G. | en_US |
dc.language.iso | en_US | en_US |
dc.publisher | Cell Press | en_US |
dc.subject | low phosphate | en_US |
dc.subject | low iron | en_US |
dc.subject | nutrient availability | en_US |
dc.subject | root growth | en_US |
dc.subject | cell elongation | en_US |
dc.subject | brassinosteroids | en_US |
dc.subject | BRI1 | en_US |
dc.title | Interdependent nutrient availability and steroid hormone signals facilitate root growth plasticity | en_US |
dc.type | Article | en_US |
dc.identifier.officialurl | https://www.cell.com/developmental-cell/abstract/S1534-5807(18)30456-8 | en_US |
dc.identifier.doi | https://doi.org/10.1016/j.devcel.2018.06.002 | en_US |
Appears in Collections: | Institutional Publications |
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